Mold structure



A ril-'27, 1925, 1,582,092

E. C. STACY LD TR QT ()g'igina l Filed. July 2, 1924 Patented Apr. 27,1926.

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Original application filed July 2, 1924, Serial No. 723,7?8. Divided andthis ap'pIication f led January 2,

To all whom it may concern:

Be it known that 1, EUGENE C. STAoY, a citizen of the United States,residing at Tiffin, in the county of Seneca and State of Ohio, haveinvented a. new and useful. Mold Structure, of which the following is aspeci fication.

This invention relates to a mold structure designed primarily for use incasting swivel links such as disclosed, for example, in my Patent1,535,350, issued April 28, 1925, and of which the present applicationisa division.

In the construction of load binders such as disclosed in my Patent1,538,412, issued May 19, 1925, it is essential that a swivel link beemployed in which the eye portion is rotatably mounted relative to thelink portion but the two parts are held together without specialfastening means. Heretofore this method of forming a swivel link hasbeen unsuccessful but, by following the method disclosed in the patentof which this case is a division, the production of a swivel link hasbeen successfully accomplished by the use of a mold structure such asconstitutes the present invention.

It is an object of this invention to provide a mold structure which,when assembled for use, will provide means whereby the gases generatedbetween the contacting cold metal and molten metal during the castingprocess will vent without distortion of the metal being cast.

\Vith the foregoing and other objects in View which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed may be made within thescope of what is claimed without departing from the spirit of theinvention.

In the accompanying drawings the preferred form of the invention hasbeen shown.

In saiddrawings- Figure 1 is a section through a portion of the moldsuch as constitutes the present invention and showing a swivel linkprior to pouring molten metal into the mold.

Fig. 2 is a section through a portion of the Serial No. 191.

mold showing the swivel eye engaged by the metal which has been cast inthe mold. Fig. 3 is a section on line 3 3, Fig. 2. Referring to thefigures by characters of reference 1 and 2 designate opposed portions ota mold between which may be supported the eye portion 30f the swivellink to be produced. This eye portion is of metal previously cast andincludes a cylindrical stem 4; having an annular rib or flange 5.Thesand in the mold is so shaped by the pattern as to provide two ormore sand nodes 6 which extend'inwardly to and contact with i the flangeor rib 5. Thus it will be seen that when molten. metal is admitted tothe mold it will flow around the stem 4 and rib flange 5 and also aroundthe nodes 6, as shown at 7.

Consequently the link thus produced will have the stem 4 and rib 5embedded therein but recesses 8 will be provided in the link through theprovision of the nodes 6 which will open into the space rib 5.

' When the metal is-poured into the mold, any moisture which may havecondensed upoccupied by the I on the stem 4- and' rib 5 is convertedinto gas which will flow along the surface of the stem 4: and seep intothe sand forming the nodes 6. This course will be followed by the gasesbecause it is the path of least resistance and, consequently, thearticle produced will not. be formed with blows or defective placeswhere it opens around the stem 4, but, instead, will be left withperfectly outlined recesses 8 through which the gases have escaped.

What is claimed is 1. A mold for use in the production of swivel linkswhich includes opposed mold members having bodies of sand therein forreceiving an eye member therebetween, there being opposed sand nodesextending from the bodies for contacting with opposed portions of theengaged eye member.

- 2. A mold for use in. the production of swivel links, includingopposed bodles of molding sand forming a recess therebetween for shapingmolten metal into the link portion of a swivel link, said sand bodiesconstituting means for gripping an eye member of cast metal and holdingit during he pouring of the metal in the formation of the link, and sandnodes extending from said bodies for engaging portions of the eye memberto vent gases from the surface thereof during the pouring of the moltenmetal.

3. The combination with a mold including opposed bodies of molding sandhaving a link forming recess therebetween, said sand bodies constitutingmeans for engaging and supporting a previously cast eye member having anenlargement projecting into the recess, of means integTal with the sandbodies for venting gases generated upon the surface of the eye memberduring the casting of the link member.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature.

EUGENE C. STACY.

